Electrophoretic deposition of calcium phosphates from non-aqueous media

✍ Scribed by R. Damodaran; B.M. Moudgil

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 917 KB
• Volume: 80
• Category: Article
• ISSN: 0927-7757
• DOI: 10.1016/0927-7757(93)80198-n

✦ Synopsis

Electrophoretic

deposition of ultrafine calcium phosphates from non-aqueous suspensions onto metallic substrates was attempted in order to obtain coatings with varying porosities. Aging effects were studied by measuring changes in the electrophoretic deposition behavior of the calcium phosphate particles in the non-aqueous suspensions.

It was observed that the surfaces of the calcium phosphates develop significant electrostatic charge during aging in order to enable the formation of a dense and uniform deposit. The addition of surface charge conditioners such as HCl was found to have a similar effect. Dispersion conditions were varied to obtain coatings of the desired green densities, which were sintered to different microporosities.